Windmill and clutch therefor.



F. W. PIERSON.

WINDMILL AND CLUTCH THEREFOR. APPLIOATION FILED SEPT. 16, 1908. v 794. IPatented Aug. 10, 1909.

2 SHEETS-SHEET 1.

F. W. PIERSON.

WINDMILL AND CLUTCH THEREFOR.

APPLIOATION FILED 8EPT.16,1908;

. Patented Aug. 10, 1909.

2 SHBETS-SHEET 2.

@vwewtoz 14 Ede/290a wits wows ANDREW B. GRAHAM co" PROTO-UYHOGRAPHERS,WASNINBTON. u. c.

FRITZ W. PIERSON, OF MISSOULA, MONTANA.

WINDMILL ANl CLUTCH THEREFOR.

Specification of Letters Patent.

Patented Aug. 10, 1909.

Application filed September 16, 1908. Serial No. 453,339.

To all whom it may concern:

Be it known that I, FRITZ W. PIERsoN, citizen of the United States,residing at Missoula, in the county of Missoula and State of Montana,have invented certain new and useful Improvements in Windmills andClutches Therefor, of which the following is a specification.

This invention relates to improvements in wind mills and particularly toimproved means for governing the wind mill and embodying a brakemechanism which operates automatically to stop the rotation of the windmill at a predetermined speed thereof, the invention also embodyingmanually operated means for the same purpose. 7

For a full understanding ofthe invention and the merits thereof and alsoto acquire a knowledge of the details of construction and the means foreffecting the result, reference is to be had to the followingdescription and accompanying drawings, in which:

Figure 1 is a side elevation of a wind mill constructed in accordancewith my invention, Fig. 2 is a horizontal sectional view thereof on theline 22 of Fig. 1, Fig. 3 is a detail perspective view of a portion of awind wheel, Fig. 4 is a longitudinal sectional view of the upperportionof the wind mill, and, Fig. 5 is a horizontal sectional view through thewheel, the section being taken substantially on the line 55 of Fig. 1. 1

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

Referring to the drawings, the numeral 1 designates the standards of thewind mill framework, said standards being surmounted by the open framecasing 2 in which the upper and lower heads 3 and 4 of the wind wheelare mounted for rotation. These heads are provided respectively with anumber of spokes 5 and 6 between which relatively stationary sections 7of the blades are secured in any desired way. The relatively movablesections 8 of the wind mill blades are hinged to the outer edges of thestationary sections 7, as best seen in Fig. 3, and said hinged sections8 are connected by link rods 10 to the radial arms of the upper andlower collars 11'and 12. Upper and lower friction cones 13 and 14 aresecured by keys or other means rigidly to the governing collars 11 and12, all of these parts being j inounted to turn loosely on a hollowshaft v15,. The heads 3 and 4 are keyed or otherwise rigidly securedtosaid shaft to turn therewith. A friction cup 16 is mounted over theupper friction cone 13 and is provided with a grooved hub which isencircled by a clutch collar 17, said collar being secured to the upperend of a vertically disposed spindle 18 contained within the upper endof the hollow shaft 15. The spindle 18 carries at its lower end a crosshead 19 the arms of which project outwardly in opposite directionsthrough vertically elongated slots formed in the shaft 15. The verticalrods 20 are secured at their upper ends to the ends of the cross head 19and extend downwardly therefrom, said rods 20 passing through openingsformed in bracket arms 21 rigidly secured to the shaft 15. Relativelyshort levers 22 are fulcrumed intermediate of their ends on the bracketarms 21 to rock about a horizontal axis, the inner ends of said leversbeing secured to the rods 20, while the outer ends of said levers areconnected by links 23 to a clutch collar 24. This collar 24 encirclesthe grooved hub of a friction cup 25 which faces upwardly as shown andwhich is designed to engage the lower friction cone 14. These cups 16and 25 are held for up and down movement only by means of slotted lugs26 formed on the cups and accommodating vertically extending pins 27secured to the casing 2 of the supporting framework. A second cross head28 is mounted for a limited vertical movement in vertically elongatedslots formed in the shaft 15 and is secured to the lower ends of therods 20. Centrifugally acting governor arms 29 are pivotally suspendedfrom the ends of the cross head 28 and are in turn connected by links 30to a collar or bracket 31 rigidly secured to the shaft 15. The lower endof the shaft 15 is provided with a reduced section 32 formed at itslower end with a clutch member 33. 34 designates a driven section of theshaft 15, said section being provided with a clutch member 35 designedfor engagement with the clutch member 33 and has a spline connectionwith the shaft section 34. A clutch collar 36 encircles the clutchmember 35 and is connected by means of links 37 with the lowerextremities of the rods 20. The shaft section 34 is formed with spiralthreads 38, and a cor respondingly threaded nut 39 is mounted on theshaft section 34, said nut being operatively connected in any desiredway to the shaft 40 of a pump, so that as the shaft section 34 turns,the nut 39 will work first up and then down on the shaft section andeffect the reciprocation of the pump rod or shaft.

In the practical operation of my improved wind mill, it will beunderstood that as the mill is working under normal conditions, thehinged sections of the blades will be extended to an operative positionwhere the proper effect of the wind can be obtained. As the wind millspeeds up, the governor arms 29 are caused to swing outwardly bycentrifugal action and if the'speed reaches a definite point, it isobvious that these arms will swing out far enough to draw downwardlyupon the cross head 28, the downward movement of said arms beingcommunicated to the upper cross head 19 and thence through the spindle18, to the upper friction cup 1 6, said cup being caused to frictionallyengage the upper friction cone 13. The downward movement of the crossheads 28 and 19 will also, through the rods 20, cause the levers 22 torock in a direction to force the, clutch collar upwardly and this willmove the lower friction cup 25 upwardly simultaneously with the downwardmovement of the upper friction cup the said cups being brought tofrictionally bear against their respective cones and effecting the.retardation of the governing collars l1 and 12. As these collars arecaused to. turn, they will tend to, swing the hinged section 8 of theblades inwardly to an inoperative position so as to close the wind wheelto the action of the wind and bring; the same to a standstill. Thedownward movement of the rods 20 as above described, will becommunicated to the links 37 and as these are connected at their lowerends to the clutch collar 36, it is obvious that the driven shaftsection 3e will be uncoupled from the section 32 and the pump be thrownout of gear. In addition tothese automatically operating mechanisms, Iprovide manually operable devices for effectingthe brake action on thewind wheel, said devices comprising links 41 that are connected at theirupper ends to the friction cup 25 and are connected at their lower endsto a circular band 42, said band in turn being connected to a brakelever 43 fulcrumed in the supporting framework and operated by a pullcord or the like.

Having thus described the invention, what is claimed new is:

1. A wind mill, comprising a supporting framework, a hollow shaftmounted to turn therein, a wind wheel movable with said shaft andembodying a plurality of hinged blades, upper and lower collarsoperatively connected to said blades, upper and lower cones mounted onsaid shaft and connected to the respective collars, upper and lowerfriction cups designed to engage said cones to retard the movementthereof as the wind wheel turns, centrifugal acting governor armsoperatively connected to. the lower cup, and a spindle mounted in said.shaft and connecting said arms to the upper cup whereby the outwardmovement of 'the arms will simultaneously move the cups into engagementwith their respective cones.

2. A wind mill comprising a supporting framework, a hollow shaft mountedto turn therein, a wind wheel mounted in said framework, upper and lowerfriction devices arranged to impose a brake on said wheel, and means forautomatically operating said friction devices, said operating meansincluding a spindle mounted in said shaft and connected to the upperclutch device, a cross head secured to the lower end of said spindle,rods connected to said cross head, another cross head connected to thelower end of said rods, governor arms suspended from said last namedcross head, a bracket secured to the shaft and having link connectionswith said arms, another bracket secured to the shaft above the firstnamed bracket, levers fulcrumed on the second mentioned bracket, saidlevers being connected at one end to said rods, and links operativelyconnected to the other ends of said levers and to the lower clutchmember.

In testimony whereof I ailix my signature in presence of two witnesses.

FRED w. PIERSON. a s]:

Witnesses I. L. BEAULIEU, MA hllELOCBE.

